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Friday, May 11, 2012

K-5 DR Re-visited (Vs 5D3 and D800 @ DPR)

DPR's DR results for both 5D3 and D800 have been out. So, now we can compare against the K-5:-

http://www.dpreview.com/reviews/pentaxk5/14
(Select the cameras and the settings in the second comparison tool boxes)



Note that the DPR DR measurement is a real-life approach to shoot a greyscale target in EV steps and check what the cameras can deliver all by themselves, with different in-camera settings.

So, the above results are self-explanatory by themselves. At the end of the day, the DR of 5D3 and D800 are still wider and they are better, no matter what and how it is compared.
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+7 Vote up Vote down
MrBig's avatar

MrBig · 670 weeks ago

Since these tests are limited to JPG (not RAW) then they are rather pointless imo.
The most reliable testing for DR is from DxOMark.
JPG DR measurements just aren't useful.
+5 Vote up Vote down
Walt's avatar

Walt · 670 weeks ago

Hold on, you are comparing the much more expensive D800 and 5D FF to the two year old K-5 APS-C using dpreview testing of JPGs when most quote DXO scores based on RAW sensor D range? Dude, if you hate Pentax so much to the point where you are combing through tests for any small negative thing to point out about Pentax, why are you even doing this site?
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Jazjohal's avatar

Jazjohal · 670 weeks ago

Apples and Oranges, really really lame.
+6 Vote up Vote down
Alex's avatar

Alex · 670 weeks ago

Lame, indeed; a JPEG must look nice, not flat but high-DR. Our host RH is very, very eager to post such results without the most basic level of understanding and filtering out bogus results. If it's negative, anything negative, it's OK - or so it seems.
Btw, ADL also helps on shadows, which for Pentax is a different function (not set in this "test")

Real DR measurements were performed by DXOMark (one of the few things they're good at), and the K-5 is on #2 with 14.1EV, while the newer D800 is on #1, with 14.4EV DR. And many (including me) confirmed it's for real, you can bring up an amazing amount of detail from underexposed areas.
So claiming the K-5 gets beaten is at least laughable.
+4 Vote up Vote down
Arn's avatar - Go to profile

Arn · 670 weeks ago

A test guy from "chasseur d'image magazine" (Ronan Loaec, in the magazine's forum) explain than DPreview dynamic tests are just rubbish, and he pretends than DPreview just don't know what dynamic is, according to the tests they do.
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OGL's avatar

OGL · 670 weeks ago

I'd like to say the secret - Dpreview never measures DR. :) GordonBGood and oleg_v as physicists explained many times at pentax forum of DPR - why Dpreview tests are nothing and Dpreview doesn't understand what DR means.
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Florent Gluck's avatar - Go to profile

Florent Gluck · 670 weeks ago

As others said, this graph only measures the JPG engine output's DR. The real RAW DR of the Pentax K5 sensor output is only beat by the new Nikon D800. As it is the K5 still stands number 2 among ALL other cameras in the market. Pretty impressive if you ask me.
Canon's sensors suck when it comes to DR and the MKIII trails far behind the K5 in this respect (almost 2EV less!).
Do your homework next time before posting false results. Hint: check dxomark and you'll learn quite a few things...
-1 Vote up Vote down
Rob's avatar

Rob · 670 weeks ago

"K5 sensor output is only beat by the new Nikon D800. As it is the K5 still stands number 2 among ALL other cameras in the market."

I would change that to cameras in it's class than "ALL other cameras in the market".....
1 reply · active 670 weeks ago
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Florent Gluck's avatar - Go to profile

Florent Gluck · 670 weeks ago

Well, check for yourself the rating for DR among all tested sensors (which include MF backs): http://www.dxomark.com/index.php/Cameras/Camera-S...
K5 gets the 2nd position after the D800 ;)

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